Street-sweeper.



AR. L. SHBMAKER.

STREET SWEEPBRI APPLICATION FILED MAR. 12, 1910.

Patented Dec. 19, 1911.

NNY

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,WM f @NM R. L. SHOEMAKER. STREET SWEEPBR. APPLIGATION FILED 111.1142, 1910.

1,012,171. Patendne. 19,1911.

6 SHEETS-SHEET a.

R. L. SHEMAKBR. STREETSWEEPER. APPLIOATION FILED 11111.12, 1910.

1,012,171 Patented De0.19,1911\.

HIIIIIIIIIIIHHII R. L. SHOEMAKER.

STREET SWBBPER.

APPLIGATIDN FILED 1113.12, 1910.

(TIM un llo@ {1MM-Men Patented Dec. 19, 1911.

R. L. SIIOIIMAKER.-

STREET swBBPBR.

, APPLICATION FILED HAB. 12, 1910.-

Patented Deo. 19, 19114 view, Fig. 3, a rear tudinal UNITED STATES PATENT OFFICE.

RANKIN,L. SHOEMAKEB, 0F NEWCOMERSTOWN, OHIO.

STREET-SWEEPER.

Speclcatlon o! Letters Patent.

Patented Dea-19, 1911.

Application filed March 12, 1910. Serial No. 548,923.

To all inkom 'it may concern:

VBe it known that I, RANKIN L. SHOE- MAK'ER, a citizen of the United States, resid,

ing at N ewcomcrstown, in the county of Tuscarawas and State of Ohio, have invented certain new and useful Improvements "i'ng's iii its bottom and a conveyer to carry the sweepin from the broom to the storage receptac e.

Another ob'ject 'f myinvention is the provision of a dust pan in advance of the broom to carry the swee ings to the conveyer, said pan consisting o .a series of stri secured to a revoluble shaft, the s aft being operatively secured tothe broom'journals so that when the brooin'xis raised into an ino erative position the pan is also raised. hen in its lowered position the strips of steel comprising the pan will give individually so as to ermit passing over obstructions without a ectin the operation of the lian as awhole. T e pan is also adjusts. ly mounted so that it canbe lowered as 1t wears from en ement with the street surface to add to `e fe of the parts. Another object of my invention .is the revision of an im roved construction of room consisting of orming a spiral groove around a tubular core by securing lengths of angle beams around it with oppositely disposed lateral flanges to form the grooves for the broom b'e'rs or wires that are secured Ain position in the usual manner.

My invention will be described in detail hereinafter and illustrated in the accompanying drawings in whichu i Figure 1 is a side view in elevation of my improved street sweeper, Fig:-2, a top plan view, iig. 4 a longisectional view, Fig. 5, a ragmental view of the train showing it partly in sec tion, Figs. 6 and 7, detached views of the conveyorV inclosure frames, Figs. 8 and 9, views of the dust pan, and Fi 10 and 11, views of the ,dust pan supporting bracket.

s o'f steel shown in Fig. 5,

In the 'drawings similar reference characters indicate corrvspondingparts in all of the views.

The frame of my improved machine isn made of structural steel, the side sills 1 and the frontsill 2 being in one continuous length of channel beam, 3 indicates a cross beam connecting the side sills 1 adjacent to their front-ends, and cross beams 4 and 5 connecting the sills near their rear ends. The front beam 2 is formed angular as shown in Fig. 2 and short-lengths of an le beams 6 are secured longitudinally of t e supporting frame at eachside of the median line thereof by means of angular brackets 7,

8 indicatin la plate secured to angle beams 6 to form tie support for the front-truck 9 .of the machine which is swivelly mounted thereon.

10 indicates angle beams connecting cross beams 4 and 5 on which are mounted journal boxes 11 in which are journaled the axle 12 on which are mounted the rear wheels 13 of themachine, said axle being formed in two parts connected by a diiierential gearing of ordinary construction contained in casing 14. Casing 14 is formed with a spur gear face V15, and 16 indicates a clutch operated by lever 17 to throw the dierentia gearing contained in cas' 14 into and out of ar.

18 indicates ams secured to e under sides of sills 1 just forward of cross beani4 and on which are mounted journal boxes 20 for counter shaft 21.

22 indicates a plate secured to the upper sides of sills 1 and strengthened by crossbeams23, said plate 22-supporting journal boxes 24 in which is -joiirnaled counter shaft 25.

26 indicates a sprocket wheell secured to counter-shaft 21, 27 a sprocket wheel secured to counter shaft 25 and 28 an endless chain geared to sprocket wheels 26 and 27 and spur gear face 15 so that when the machine is drawn forwardly and the clutch 16 is closed the counter shafts 21 and 25 are rotated.- i

29 indicates arms loosely'inounted on the ends of axle 12 and each having a journal box 29g secured thereto in which is journaled the ends of the core 30 of the broom 31, said broom being rotated by a chain and sprocket gearing 32 connecting couiiteishaft 21 and core 30. v

My improved broom is constructed as in which the core 30 is iio tical fianoes 30c shown as tubular and may be constructed of steam pipe with ball-like ends 30Uthat are journa e in spherical journal boxes 29'* so as to allow play between the two ends of the broom and their journals in oing over roughnesses and obstructions in t e`street as well as turning the machine.

30b indicates angle beams secured spirally on the tubular`core 30 and having their verspaced lapart to form grooves 30d for tTie broom bristles 30 which are se cured in the usual manner by bending them in their middles, to tit the grooves 30" and securing them in position by means of a rod or length of wire 30'.

33 indicates levers mounted in the rear ends of sills 1 and supporting the broom i1A by means of links 34 Secured to journal boxes 29* the free ends of the llevers being provided with ad'ustable weights and operated by means o bell crank levers 36 fulcrumed to cross beam 5 connected by a link 37, 38 indicatin a lever suitably fulcrumed and connected to an arm 39 extending from one of said levers 36 to raise and lower the broom. It will be understood that when in its lowered position the pressure of the broom may be regulated by moving the wei hts 35 on the levers 33.

L ounted on the sills 1 adjacent to the forward ends thereof are frames 40 havin inclined supports 41 and 42 therein in w iicli arexmounted journal boxes 43, 44 and 45. Journal boxes 43 supporting the apron roll 46 driven by chain and sprocket gearing 46' from shaft 25, journal box 44 supporting rotary brush 47 to clean the apron 48 toremove any wet or sticky substances that adhere thereto, and journal box 45 supporting an idler roll for the apron. All of said journal boxes" 43, 44`and45 are adjustable by means of screws 49. t

50 indicates a chain and sprocket caring to drive brush 47 from the apron `rol shaft.

51 indicates a frame secured under each sill 1 adjacentto its rear end land having journal boxes 52 secured to its under side to support apron roll 53. The forward end of each frame 51 is inclined as shown at 54 and the forward a'nd under sides of the frames 51 are covered with metal plates 55.

56 indicates a plate secured under each sill 1 just forward of frame 51 having angular points 57' with doors 58 pivotally secured to the rear sides f the points said doors being simultaneously operated by means of lever 59 and a rod 60 connecting the lever 59 and said doors 58.

61 indicates an angle beam on each side of the machine, secured at one end to plate '22, to the u per corners of each frame 40, being curve( as shown at 61* between said corners of frame 46, then curved at the front as shown :it 61b and finally secured to the front edge of plate 56, said beams 6l forming` ribs to which plates or sheets of metal 62 are sec'ured to inclosethe top and front ofthe machine. The inclined portion of the plates 56 between the doors 58 also have a plate 63 secured thereto and the plates above 70 the rearmost door are also. inclosed by a plate. The spaces between the sill 1, frame 40 and angle beam rib 61' are also inclosed by plates 64, this structure comprising the conveyer casing and dust receptacle, the

which consists of a tubular shaft 67 having 35 strips of steel 68 secured thereto and-rods 69 brazed into its ends, said rods mounted in tlie brackets 66, the free ends of said rods being curved upwardly and rearwardly and secured to journal boxes 29 so that when ,the 9o broom is raised by the instrumentalities hereinbefore described, the dust pan will swing upwardly out of engagement with the.A street surface and when the broom isiowered the pan will also be lowered to engage the street surface and carry the sweepings to the conveyer apron 48.'

'l `he pan by beingiormed of a number of strips of spring steel as shown and described admits ofthe part of the pan strikin obstruction raising to pass over itl witi/out necessitating the whole pan raisin and after the obstruction has been passe the up ward] y sprung portions resune their former positions.

By mount-ing the hanger brackets in the elongated openings I am enabled to lower the rackets and an to' compensate for the wear of the part in use, the lowermost o en ings 56l being, as shown in Figs. `11 an 12 110 inclined rearwardly so asito turnthe loweredge of the pan under the broom as well as keep the curved portion of rods 69 in their positions in the journal boxes 29.

70 indicates the broom a ron pivotally se- 11154 cured to the rear ends o sills 1 and supported in position by means of chains or other 4flexible devices 71.

Having thus described my I claim is 1. In a street sweeper, in combination with an adjust-ably mounted broom, and a sweepings conveyer, a shaft journaled between the broom and conveyer, strips of invention what steel secured to said shaft.- and constituting 125 the dust pan to carry the dust. from the broom to the eonveyer, and means secured to the shaft and connected to the broom to adjust tlie pansimultaneouslywtli the broom.

2. In a street sweeper, in combination 130 all with a supporting frame, arms lpivotally secured to said frame, journal boxes secured to said arms, a broom ]ournaled in said journal boxes, and asweepings conveyer, a shaft journaled between the broom and conveyor, strips of steel secured to said shaft and oonstituting the dust pan to carry the dust from the broom to the conveyer, and rods secured to the ends of said shatand enaging the broom journal boxes to raise and 10 ower the pan when the broom is raised and lowered.

In testimony whereof I hereto nlx Iny signature in the presence of two Witnesses.

f RANKIN L. SHOEMAKER. Witnesses:

DENT L. Linnen, H. E. YEAGLEY.

Copies of this patent may be obtained for ve cents each, by arldressing the Commissioner of Patents,

Washington, D. C." l 

